package com.miaoshaproject.controller;

import com.alibaba.druid.util.StringUtils;
import com.miaoshaproject.controller.viewobject.UserVO;
import com.miaoshaproject.error.BusinessException;
import com.miaoshaproject.error.EmBusinessError;
import com.miaoshaproject.response.CommonReturnType;
import com.miaoshaproject.service.UserService;
import com.miaoshaproject.service.model.UserModel;
import org.apache.catalina.User;
import org.apache.tomcat.util.security.MD5Encoder;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import sun.misc.BASE64Encoder;

import javax.servlet.http.HttpServletRequest;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;

@Controller("user")
@RequestMapping("/user")
@CrossOrigin(allowCredentials = "true",allowedHeaders = "*")

public class UserController extends BaseController{

    @Autowired
    private UserService userService;

    @Autowired
    private HttpServletRequest httpServletRequest;




    //用户登录接口
    @RequestMapping(value = "/login",method = {RequestMethod.POST},consumes = {CONTENT_TYPE_FORMED})
    @ResponseBody
    public CommonReturnType login(@RequestParam(name="telphone")String telphone,
                                @RequestParam(name="password")String password) throws BusinessException,NoSuchAlgorithmException {
        //入参校验
        if(org.apache.commons.lang3.StringUtils.isEmpty(telphone) ||
            StringUtils.isEmpty(password)){
            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR);
        }

        //用户登录服务，校验用户登录是否合法
        UserModel userModel = null;

        try {
            userModel = userService.validateLogin(telphone,this.EncodeByMd5(password));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        //将登录凭证保存session
        this.httpServletRequest.getSession().setAttribute("IS_LOGIN",true);
        this.httpServletRequest.getSession().setAttribute("LOGIN_USER",userModel);

        return CommonReturnType.create(null);
    }

    //用户注册接口
    @RequestMapping(value = "/register",method = {RequestMethod.POST},consumes = {CONTENT_TYPE_FORMED})
    @ResponseBody
    public CommonReturnType register(@RequestParam(name="telphone")String telphone,
                                     @RequestParam(name="otpCode")String otpCode,
                                     @RequestParam(name="name")String name,
                                     @RequestParam(name="gender")Byte gender,
                                     @RequestParam(name="age")Integer age,
                                     @RequestParam(name="password")String password) throws BusinessException, NoSuchAlgorithmException {
        //验证手机号与otpCode对应
        String inSessionOtpCode = (String)this.httpServletRequest.getSession().getAttribute(telphone);
        if(!StringUtils.equals(otpCode,inSessionOtpCode)){
            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR,"短信验证码不正确");
        }

        //用户注册流程
        UserModel userModel = new UserModel();
        userModel.setName(name);
        userModel.setGender(gender);
        userModel.setAge(age);
        userModel.setTelphone(telphone);
        userModel.setRegisterMode("byphone");
        try {
            userModel.setEncrptPassword(this.EncodeByMd5(password));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        userService.register(userModel);
        return CommonReturnType.create(null);
    }

    public String EncodeByMd5(String str) throws NoSuchAlgorithmException, UnsupportedEncodingException {
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        BASE64Encoder base64En = new BASE64Encoder();

        String newstr = base64En.encode(md5.digest(str.getBytes("utf-8")));
        return newstr;
    }

    //用户获取otp短信接口
    @RequestMapping(value = "/getotp",method = {RequestMethod.POST},consumes = {CONTENT_TYPE_FORMED})
    @ResponseBody
    public CommonReturnType getOtp(@RequestParam(name="telphone")String telphone){
        //需要按照一定的规则生成otp验证码
        Random random = new Random();
        int randomInt = random.nextInt(99999);
        randomInt += 10000;
        String otpCode = String.valueOf(randomInt);


        //将otp验证码从对应用户的手机号关联,使用httpsession 绑定手机号和code
        httpServletRequest.getSession().setAttribute(telphone,otpCode);

        //将otp验证码通过短信通道发送给用户,省略
        System.out.println("telphone = " + telphone + "& otpCode = "+ otpCode);

        return CommonReturnType.create(null);
    }

    @RequestMapping("/get")
    @ResponseBody
    public CommonReturnType getUser(@RequestParam(name="id") Integer id) throws BusinessException {
        //调用service服务获取对应id的用户对象并返回给前端
        UserModel userModel = userService.getUserById(id);
        //将核心领域模型用户对象转化为可供UI使用的viewobject
//        return userModel;
//        return convertFromModel(userModel);
        //若获取的用户信息不存在
        if(userModel == null){
//            userModel.setEncrptPassword("123");
            throw new BusinessException(EmBusinessError.USER_NOT_EXIST);
        }

        UserVO userVO = convertFromModel(userModel);
        return CommonReturnType.create(userVO);
    }

    private UserVO convertFromModel(UserModel userModel){
        if(userModel == null){
            return null;
        }
        UserVO userVO = new UserVO();
        BeanUtils.copyProperties(userModel,userVO);
        return userVO;
    }


}
